18211360

素因数分解:

$2^5\times 5^1\times {\mathrm{43}}^1\times {\mathrm{2647}}^1$

素因数の和:2705

約数の個数: 48

約数和(自身を含む): 44041536

約数和(自身を除く): 25830176

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 43, 80, 86, 160, 172, 215, 344, 430, 688, 860, 1376, 1720, 2647, 3440, 5294, 6880, 10588, 13235, 21176, 26470, 42352, 52940, 84704, 105880, 113821, 211760, 227642, 423520, 455284, 569105, 910568, 1138210, 1821136, 2276420, 3642272, 4552840, 9105680, 18211360]

約数ペア:

[(1, 18211360), (2, 9105680), (4, 4552840), (5, 3642272), (8, 2276420), (10, 1821136), (16, 1138210), (20, 910568), (32, 569105), (40, 455284), (43, 423520), (80, 227642), (86, 211760), (160, 113821), (172, 105880), (215, 84704), (344, 52940), (430, 42352), (688, 26470), (860, 21176), (1376, 13235), (1720, 10588), (2647, 6880), (3440, 5294)]